Deion's Estranged WifeAllegations ofCredit Card Abuse

5/18/2013 4:30 AM PDT

Deion Sanders' Estranged Wife -- Allegations of Credit Card Abuse

Deion Sanders' estranged wife would've SCOFFED at a $6k credit card bill when she was happily married to a rich guy ... but now, she's RUNNING from it, this according a new lawsuit obtained by TMZ.

We've learned ... Capital One has slapped Pilar Sanders with a big, fat lawsuit in Texas for allegedly failing to make payments on a $6,160.25 bill ... an amount she used to consider chump change.

We've been reporting for months ... Pilar and Deion are at WAR -- and Prime Time even kicked her out of his Texas mansion. Pilar has lawyered up and wants a cut of the NFL legend's fortune, estimated at more than $250 million.

But for now Capital One just wants its $6k ... and according to court docs, the bank says it reached out to Pilar in January, 2013, demanding she cough up the cash ... but she never paid.

Now, C.O. is suing for the full amount plus court costs.

What's in your wallet?

A rep for Pilar tells TMZ ... any financial strain Pilar is under is because Deion hasn't paid her the money she's owed in a timely manner.